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A general framework for shiftable position-based dual-image reversible data hiding

and approved the final manuscript. Authors’ information Heng Yao received the B.S. degree from Hefei University of Technology, China, in 2004; the M.S. degree from Shanghai Normal University, China, in

A Novel Image Noise Level Function Estimation Approach using Camera Response Function Constraint

In this paper, we propose a noise level evaluation method for real captured photos. Different from conventional noise removal methods that assume noise follow a simply additive Gaussian distribution, noise distribution in our method is supposed to be a more sophisticated intensity-dependent distribution, which has a better fit with actual noise model. Follow the definition of...